package net.sf.xmm.moviemanager.util;

import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Image;
import java.awt.Transparency;
import java.awt.image.BufferedImage;
import java.awt.image.PixelGrabber;

import javax.swing.ImageIcon;



public class Pictures {
	
    public static BufferedImage toBufferedImage(Image image) {
    	
       if (image instanceof BufferedImage) {return (BufferedImage)image;}
   
       // This code ensures that all the pixels in the image are loaded
       image = new ImageIcon(image).getImage();
   
       // Determine if the image has transparent pixels
       boolean hasAlpha = hasAlpha(image);
   
       // Create a buffered image with a format that's compatible with the screen
       BufferedImage bimage = null;
       GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
       try {
           // Determine the type of transparency of the new buffered image
           int transparency = Transparency.OPAQUE;
           if (hasAlpha == true) {transparency = Transparency.BITMASK;}
   
           // Create the buffered image
           GraphicsDevice gs = ge.getDefaultScreenDevice();
           GraphicsConfiguration gc = gs.getDefaultConfiguration();
           bimage = gc.createCompatibleImage(image.getWidth(null), image.getHeight(null), transparency);
       } 
       catch (HeadlessException e) {} //No screen
   
       if (bimage == null) {
           // Create a buffered image using the default color model
           int type = BufferedImage.TYPE_INT_RGB;
           if (hasAlpha == true) {type = BufferedImage.TYPE_INT_ARGB;}
           bimage = new BufferedImage(image.getWidth(null), image.getHeight(null), type);
       }
   
       // Copy image to buffered image
       Graphics g = bimage.createGraphics();
   
       // Paint the image onto the buffered image
       g.drawImage(image, 0, 0, null);
       g.dispose();
   
       return bimage;
   }

     public static boolean hasAlpha(Image image) {
            // If buffered image, the color model is readily available
            if (image instanceof BufferedImage) {return ((BufferedImage)image).getColorModel().hasAlpha();}
        
            // Use a pixel grabber to retrieve the image's color model;
            // grabbing a single pixel is usually sufficient
            PixelGrabber pg = new PixelGrabber(image, 0, 0, 1, 1, false);
            try {pg.grabPixels();} catch (InterruptedException e) {}
        
            // Get the image's color model
            return pg.getColorModel().hasAlpha();
        }
}